Continuous changes in the business environment require adjustment of business processes of the organization. This paper considers the possibility of dynamic changes of business processes according to new situations in the environment. The basic principles of adaptive business processes modeling are described. This paper presents an approach of using adaptive segments and patterns for adaptive process modeling using BPMN. The proposed approach is based on a combination of business process models, rules and patterns for the adaptive process modeling. Different applications of some of the most commonly used adaptive patterns are shown on the practical example.